Incorrect task encoding

[teslitsky]

Hello. Thank you for your solid work.
I have found bug about encoding conditions like
task.update(User, { id: 123, balance: { $gte: 100 } })
I have error Error: key $gte must not start with '$'.
it's because handle$Token function do not encode second level conditions like $gte.

[e-oj]

I've pushed updates that address this issue. Run the tests to make sure it's all good. Thanks again for your help.